Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:58:09 2012 Optimize a model with 411 rows, 398 columns and 1423 nonzeros Presolve removed 0 rows and 21 columns Presolve time: 0.00s Presolved: 411 rows, 377 columns, 1402 nonzeros Variable types: 0 continuous, 377 integer (376 binary) Found heuristic solution: objective 89.0000000 Root relaxation: objective 0.000000e+00, 251 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 171 89.00000 0.00000 100% - 0s H 0 0 68.0000000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s H 0 0 57.0000000 0.00000 100% - 0s 0 0 0.28626 0 173 57.00000 0.28626 99.5% - 0s H 0 0 39.0000000 0.28626 99.3% - 0s 0 0 0.79231 0 176 39.00000 0.79231 98.0% - 0s H 0 0 36.0000000 0.79231 97.8% - 0s H 0 0 30.0000000 0.79231 97.4% - 0s 0 0 0.79231 0 176 30.00000 0.79231 97.4% - 0s H 0 0 23.0000000 0.79231 96.6% - 0s 0 2 0.82657 0 176 23.00000 0.82657 96.4% - 0s H 27 27 14.0000000 1.00000 92.9% 41.7 0s * 37 23 23 13.0000000 1.00000 92.3% 36.3 0s H 112 58 12.0000000 1.00000 91.7% 32.3 0s Cutting planes: Gomory: 4 Mod-K: 2 Explored 472 nodes (13218 simplex iterations) in 0.54 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%